abugida

An abugida is a script that uses characters for CV syllables wherein the several characters for some consonant plus the language's array of vowels are modifications of the character for that consonant followed by the unmarked vowel (phonemically /a/).

For the scripts of the Semitic languages, five categories are needed: logography, syllabary, abjad, alphabet, and abugida. A sixth, featural script, appears when Arabic script is adapted to non-Semitic languages. […] (The English word "abugida" is borrowed from the Amharic term for the letters of the script when taken in the order known from the Ge'ez transliterations of the Hebrew letter names found in the superscriptions of the sections of Psalm 119, as used in the liturgy; it takes the first four consonants and the first four vowels in their traditional order of presentation.)